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Old 06-19-2013, 05:58 AM
boatdrinks boatdrinks is offline
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AKAI 635D - DIFFERENT HEAD COVERS....

Just got this Akai 635D from the original owner.... I sold my old 635D to my friend to get this one (my old one needed hubs)

I immediately noticed that my new one doesn't have the adjustment holes in the head cover.... so 2 questions...

Here are pics of my 2 units....

1) What is the difference between the 2 styles

2) Anyone out there wanna trade covers ?? I like the one with the holes - maybe someone out there likes the style I have !!!!!

Thanks is advance guys, Dan
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Old 06-19-2013, 11:47 AM
stoutblock stoutblock is offline
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My 635D has the holes. I believe the 636 is basically the same deck but does not have the holes. My guess is they removed them because the cover is easy to remove if you need to adjust things?

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Old 06-19-2013, 01:01 PM
dutch_frank dutch_frank is offline
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Yup, the GX-635D can be found with two different versions of the headcover. One with the azimuth adjustment holes and one without. However, the GX-635D with the headcover without the azimuth adjustment holes is very rare and I have only seen a few for sale in the 15 years that I've been watching eBay auctions. Here in Europe the headcover without the holes hasn't even been sold as far as I know. I don't know wether the headcover without the holes is the old version or the newer version. I would say it's the later version because it comes closer to the looks of the GX-636.
The GX-636 is in fact a GX-635D with a restyled front panel; the GX-636 has a more straight looking 80's style front while the GX-635D has a late 70's aluminium brushed front panel.
Also a few slight electronical improvements have been made between the GX-635D and the GX-636. Other than that they are almost identical. The GX-636 has not been so popular as the GX-635D but it also has been available for a much shorter period of time. In 1982 the GX-636 was succeeded by the GX-646.
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Old 06-20-2013, 05:27 AM
boatdrinks boatdrinks is offline
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Quote:
Originally Posted by dutch_frank View Post
Yup, the GX-635D can be found with two different versions of the headcover. One with the azimuth adjustment holes and one without. However, the GX-635D with the headcover without the azimuth adjustment holes is very rare and I have only seen a few for sale in the 15 years that I've been watching eBay auctions. Here in Europe the headcover without the holes hasn't even been sold as far as I know. I don't know wether the headcover without the holes is the old version or the newer version. I would say it's the later version because it comes closer to the looks of the GX-636.
The GX-636 is in fact a GX-635D with a restyled front panel; the GX-636 has a more straight looking 80's style front while the GX-635D has a late 70's aluminium brushed front panel.
Also a few slight electronical improvements have been made between the GX-635D and the GX-636. Other than that they are almost identical. The GX-636 has not been so popular as the GX-635D but it also has been available for a much shorter period of time. In 1982 the GX-636 was succeeded by the GX-646.

Well, I guess it's good to know that a newer one... Is there any way to tell what year the AKAI was manufactured by the serial number ??? I still would rather have the head cover with adjustment holes... It just looks cooler !!!! Dan
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Old 06-20-2013, 09:45 AM
dutch_frank dutch_frank is offline
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Quote:
Originally Posted by boatdrinks View Post
Is there any way to tell what year the AKAI was manufactured by the serial number ???
Not as far as I know....
The only thing that's for sure is that the GX-635D has been produced between december '78 and somewhere in 1981. The GX-636 has been produced between 1981 and 1982 and the GX-646 between 1982 and 1984 when Akai ceased the production of open reel recorders.
The earliest versions of the 635 have an orange-colored rec mute button while the later versions have an silver-colored rec mute button. A friend of mine here in the Netherlands most likely has a prototype of the GX-635D which lacks the pitch control function (and no, there's no hole in the front panel where the pitch control potmeter is supposed to be ).
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Old 07-30-2013, 11:05 AM
LeoB1955 LeoB1955 is offline
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Quote:
Originally Posted by boatdrinks View Post
Well, I guess it's good to know that a newer one... Is there any way to tell what year the AKAI was manufactured by the serial number ??? I still would rather have the head cover with adjustment holes... It just looks cooler !!!! Dan
Hello boatdrinks,

At least throughout the 1970s, Akai used the following format in their part numbering: yy.mm.dd. The first two digits give the year of manufacture, the next two the month, and the last two the day.

Counting from Showa 1 (1926, year of the previous Emperor's (Hirohito) accession to power), the year 1978, would be marked as 53.

The numbering wasn't in the product's serial number, however, but only painted on the company's in-house produced parts, like magnetic heads and motors.

So, it should be fairly easy to read the numbers from one of the heads. The GX head in my hand, reads: 50.7.21, telling it came out of the oven on July 21, 1975.

LeoB
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